"三名火枪手"通过减少瘤反应性氧物种抵抗力来增强光动力学效应
Wencheng Xu1,2, Yanrong Qian2, Luying Qiao2
1Shenzhen Research Institute, Shandong University, Shenzhen, Guangdong 518057, P. R. China.
ACS applied materials & interfaces
|May 14, 2024
概括
这项研究介绍了一种新型的纳米复合材料,使用上转化纳米粒子 (UCNPs) 来克服瘤对光动力学疗法 (PDT) 的抗性. 基于UCNP的材料通过向和中和瘤防御对反应性氧物种 (ROS) 的防御来提高PDT的疗效.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 癌症治疗 癌症治疗
背景情况:
- 使用上转化纳米粒子 (UCNPs) 的光动力疗法 (PDT) 由于高效率和透性,对瘤有效.
- 通过谷氨 (GSH),自和乳酸代谢,瘤对活性氧物种 (ROS) 的耐药性显著抑制了PDT的疗效.
- 克服瘤ROS抵抗对于推进PDT治疗结果至关重要.
研究的目的:
- 开发一种基于UCNP的纳米复合材料,通过减轻瘤对ROS的抗性来增强PDT.
- 创建一种能够向瘤并提供治疗剂的多功能纳米材料.
- 提高光动力疗法在癌症治疗中的整体疗效.
主要方法:
- 纳米复合材料的制造:Ce6合的SiO2封装UCNPs,涂上带有 (CQ) 和α-cyano-4-hydroxycinnamic酸 (CHCA) 装载的中性有机 (MON),并修饰用酸 (HA).
- 作用机制:UCNP将980nm激光照射转化为Ce6激发,为PDT产生单点氧 (1O2).
- 多通道ROS耐药性破坏:CQ抑制了自,CHCA阻断了乳酸的吸收,MON消耗了细胞内GSH.
主要成果:
- 基于UCNP的纳米复合材料 (UCNPs@MON@CQ/CHCA@HA) 通过激光照射下通过1O2生成证明了有效的PDT.
- 综合的CQ,CHCA和MON有效地通过抑制自,阻断乳酸吸收和减少GSH来降低瘤ROS抵抗.
- 在体外和体内实验证实了开发的纳米材料的增强PDT疗效.
结论:
- 开发的基于UCNP的纳米复合物有效地克服了瘤对ROS的抵抗力,显著提高了PDT的疗效.
- CQ,CHCA和MON的协同作用提供了一种多通道的方法来破坏瘤防御机制.
- 这一策略有望通过先进的纳米医学改善癌症治疗结果.
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